tty: serial: 8250: Set RS422 interface by default to fix Moxa RS422/RS485 PCIe boards

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[ Upstream commit 43f012df3c ]

MOXA PCIe RS422/RS485 boards will not function by default because of the
initial default serial interface of all MOXA PCIe boards is set to
RS232.

This patch fixes the problem above by setting the initial default serial
interface to RS422 for those MOXA RS422/RS485 PCIe boards.

Signed-off-by: Crescent CY Hsieh <crescentcy.hsieh@moxa.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20231214060234.6147-1-crescentcy.hsieh@moxa.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Crescent CY Hsieh 2023-12-14 14:02:34 +08:00 • committed by Greg Kroah-Hartman

parent 2e95411fb6

commit aacfe589fc

1 changed files with 57 additions and 1 deletions

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drivers/tty/serial/8250/8250_pci.c

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